Photographic-dry-plate-inspection table.



A. L. MILBNTZ.

PHOTOGRAPHIG DRY PLATE INSPECTION TABLE.

APPLICATION FILED MAY 13, 1912.

1,094,672. Patented Apr. 28,1914.

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' might have become scratched or finger ARNOLD L. MILENTZ, OF ST. LOUISCOUNTY, MISSOURI.

PHOTOGRAPHIC-DRY-PLATE INSPECTI ON TABLE.

Specification of Letters Patent. Patented Apr, 28, 1914,

Application filed May 13, 1912. Serial No. 696,936.

To all whom it may concern:

Be it known that I, ARNOLD L. Mnnn'rz, a citizen of the United "Statesof America, residing in the county of St. Louis and State of Missouri,have invented a certain new and useful PhotographicDry-PlateInspectionTable, of which the following is a full,

clear, and exact description, reference being had to the accompanyingdrawings, forming a part of this specification.

My invention relates to a new and novel article of manufacture designedto facilitate the inspection of photographic dry plates while beinautomatically conveyed from a cutting an breaking mechanism to a packingtable, thus avoiding the necessity of handling the plates by aninspector, with the attendant danger of finger-marking the sensitizedfilm of the plate. j

' Another important feature is that the distance of the plate fromalight being always uniform, the plates may be inspected with greatrapidity and. accuracy, thereby increasing the output and decreasing theliability of imperfect plates being delivered to the consumer.

Prior to my invention, it has been customary in photographic dry platefactories for an inspector to mani ulate the plate to be examined beforea sultable light for inspec:

tion, after which it was cut, broken, and

packed. This manipulation was not only slow, but was also likely toallow defective plates to pass unnoticed through the inspectors hands,and especially ones which marked by the inspector during the act ofinspecting.

Figure I is a lan view of my inspection table, one side of the boxhousing the lamps being partially broken away, and fragmentary views ofthe conveyer which delivers the plate to the conveyer traveling acrosstheinspcction table, and the conveyer which receives the inspected platefor delivery to a packing table. Fig. 11 is a side elevation, partly insection and partly broken away to show the interior of the box housingthe lamps. Fig. III is an enlarged transverse sectional'view takenthrough my inspection table.

In the drawings: 1 designates a rectanguthe belt 23, operates.

means may, however, be used instead of electric lamps.

4 designates a pair of standards secured to a supporting structure A,and provided with ledges 5, upon which the box 1 rests. Upon the upperend of these standards a sheet of glass 6 is supported and securedbetween the lips 7 and 7 8 designates a sheet of glass of narrower widththan the sheet 6, and upon which it rests 9 and 10 designate conveyerchains, the links of which mesh with the teeth of sprockets 11. Theshaft 12 upon which two of the sprockets 11 are placed is driven by abelt 13 operable on the pulley 14 on one end of the shaft 12.- i

15 designates a series of pusher fingers secured to the chains 9 and 10and adapted to contact with one edge of a photographic dry plate 16,which is placed in the path of the moving pusher fingers by the conveyer17 provided with dogs 18 for engaging one edge of the plate. Theconveyer 17 is driven by sprockets 19 mounted on the shaft 12. v

The dry plate 16 is caused to travel along the sheet of glass 8 by thepusher fingers 15 and, as the glass 8 and theglass 6 are transparent,rays of ruby colored light are permitted to pass therethrough from thebox 1, whereby an inspector may, by the aid of such rays of light,discover any defects in the illuminated sensitized film while intransit. It should be noted that the film side of the plate isuppermost, the uncoated surface of the glass plate being in contact withthe glass 8.

After the dry plate 16 has been conveyed across the top of theinspection table, it is delivered to a conveyer belt 20, which in turndelivers it to a conveyer belt 21, which travels across a packing table22. 23 is a link belt connecting the shaft 12 with a shaft 24 providedwith a pulley 25 on which for conducting a photographic dry plate alongthe support.

2. An inspection table, comprising a pair of transparent top memberslocated one above the other, the uppermost member be ing narrower thanthe lowermost member 1 plate being narrower than the first menandadapted to serve as a support for a l t-ioned plate adapted to serve asa runway photographic dry plate and means operable l for thephotographic dry plate, and a COI1- above the lower top member andalongside veyer having fingers adapted to travel above It the upper topmember for conducting a dry the first mentioned plate and alongside ofplate along the upper top member. 1 the second mentioned plate to move adry sin inspection table, comprising a lamp plate resting on said narrowplate.

housing; box, a lamp in said box, a transv ARNQLD L. BHLENTZ.

parent plate above said lamp housing boy lln the presence of a secondtransparent plate above said first A J. MCCAULEY,

mentioned plate, the second transparent E. B. LINN gar

